Daniel Rosenberg is a senior vice president at SAP, the largest enterprise application software company in the world. In this capacity he directs user experience design and usability activities across all SAP product lines. Prior to joining SAP he was vice president of R&D for UI design at Oracle Corporation. Previous corporate positions included the role of user interface architect for Borland International and Ashton-Tate. He has authored or co-authored many well known publications in the HCI field, including Human Factors in Product Design (Elsevier, 1991) as well as chapters in the original Handbook of Human Computer Interaction (Elsevier, 1988).